Find the solutions to the following quadratic equation:
(x-5)(x+9)=0
x = 5 and x = -9
Algebra: Is this a function: {(1, 2), (-2, 3), (2, 4)}
Yes, the domain does not repeat.
Equivilant
A - same as
B- Equal to
C - both are correct
C - both are correct
Julia traveled to Argentina and Chile for a total of 16 days. In Argentina, she learned 125 new words per day. In Chile, she learned 140 new words per day. She learned a total of 2145 words. Write a system of equations using x for Argentina and y for Chile.
x + y = 16
125x + 140y = 2145
D
What do you type into desmos to find the correlation coefficient?
corr(x1,y1)
What is the Standard deviation of the following Data?
21,32,43,21,34,54,33,34,36,32
9.61
What are the solutions to the equation
4x2 – 52x + 169 = 121?
1, 12
f(x) = 3x2 - 5x + 2
Find f(2).
f(2) = 4
a vertical line that cuts through the middle of the parabola, dividing it into two equal halves
a - Maximum of parabola
B x - intercept
C line of symmetry
C
Solve the following system of equations:
6x − 12y = 24
−x − 6y = 4
(2, -1)
Simplify (45)2
410
If you want to type this equation into Desmos, what do you HAVE to do to make its table?
d=3t+14
Change the variables to x or y
The choices below are data sets. In the choices, w is a constant. Each choice has the same mean. Which choice has the greatest standard deviation?
A w – 2, w – 1, w, w + 1, w + 2
B w – 2, w – 2, w, w + 2, w + 2
C w – 3, w – 1, w, w + 1, w + 3
D w – 3, w, w, w, w
C
How many solutions does it have:
2m2 + 2m − 12 = 0
2 solutions because it is positive
f(x) = 3x2 - 5x + 2
Find when f(x) = 10
x = -1 and 8/3
2(x+1) = 2x + 2
This is
A - Distributive property
B - Order of operations
A
Solve the following system of equations:
x + 7y = 0
2x − 8y = 22
(7, -1)
D
What type of shape is this data?
21,32,43,21,34,54,33,34,36,32
skew right
Marcus measured the height, in inches, y, of plants over the course of 3 weeks. The correlation coefficient between the number of days, x, and the height of the plants is 0.85. Which could be concluded based on the correlation coefficient of the data?
A There is a strong relationship showing that as the number of days increases, the height of the plants increases.
B There is a strong relationship showing that as the number of days increases, the height of the plants decreases.
C There is a weak relationship showing that as the number of days increases, the height of the plants increases.
D There is a weak relationship showing that as the number of days increases, the height of the plants d
A
Find the solutions to the following quadratic:
2x2 − 3x − 5 = 0
x = 5/2
x = -1
x2 + 10x + 25
Order of operations, or PMDAS, stands for
A - Parabola
B Parenthesis first
C - Paragraph of math
B
Solve the following system of equations:
−8x − 10y = 24
6x + 5y = 2
(7, -8)
J
If the question is for System of Equations, and what you input into Desmos has an answer of parallel lines, what answer would be correct?
A infinite
B coordinate pair
C no solution
C No Solution.
What is the IQR of the data set?
21,32,43,21,34,54,33,34,36,32
4
A water balloon is catapulted into the air so that its height h, in meters, after t seconds is
h = -4.9t2 + 24.5t + 1. What is the maximum height of the balloon? Round to the nearest tenth.
h = 31.6 meters
Write an exponential equation for this scenario.
I bought a house for $145,000. It appreciated at a rate of 7%.
f(x) = 145000(1.07)x
Roots of a parabola are the same as
A solutions
B X intercepts
C Zeros
A B and C
If two lines intersect, then the solution to the system is:
a. One solution
b. Infinitely Many Solutions
c. No solution
One solution
What is the correct factor of 25x2-64?
A(5x+8)(5x-8)
B (5x-8)(5x-8)
A (5x+8)(5x-8)
If the answer is resulting in a decimal, and the question asks for a fraction, you should use
A - a pencil to calculate the conversion
B - the fraction symbol in Desmos
C - move the decimal place back 2 places
B - the fraction symbol in Desmos
Linear or exponential
the amount of money, y, in an account after x years earning 4% interest compounded annu
exponential